Primary tabs

EPSCoR

The primary objective of Idaho EPSCoR is to stimulate research in niche areas that can become fully competitive in the disciplinary and multidisciplinary research programs of the National Science Foundation and other relevant agencies. Idaho EPSCoR provides support for sustainable increases in Research and Development capacity and advances science and engineering capabilities within the state.

Visit them at https://www.idahoepscor.org

License

notspecified

Other Access

The information on this page (the dataset metadata) is also available in these formats.

JSON RDF

via the DKAN API

Data from: The role of genome duplication in big sagebrush growth and fecundity

Data and code that support the following peer-reviewed manuscript in American Journal of Botany. https://doi.org/10.1002/ajb2.1714 The data sets and R scripts are available from GitHub. Growth: (https://github.com/brichardsonfs/growth). Seed yield: (https://github.com/brichardsonfs/seed_yield)

Abstract
Premise
Adaptive traits can be dramatically altered by genome duplication. The study of interactions among traits, ploidy, and the environment are necessary to develop an understanding of how polyploidy affects niche differentiation and to develop restoration strategies for resilient native ecosystems.

Methods
Growth and fecundity were measured in common gardens for 39 populations of big sagebrush (Artemisia tridentata) containing two subspecies and two ploidy levels. General linear mixed-effect models assessed how much of the trait variation could be attributed to genetics (i.e., ploidy and climatic adaptation), environment, and gene–environment interactions.

Results
Growth and fecundity variation were explained well by the mixed models (80% and 91%, respectively). Much of the trait variation was attributed to environment, and 15% of variation in growth and 34% of variation in seed yield were attributed to genetics. Genetic trait variation was mostly attributable to ploidy, with much higher growth and seed production in diploids, even in a warm-dry environment typically dominated by tetraploids. Population-level genetic variation was also evident and was related to the climate of each population's origin.

Conclusions
Ploidy is a strong predictor growth and seed yield, regardless of common-garden environment. The superior growth and fecundity of diploids across environments raises the question as to how tetraploids can be more prevalent than diploids, especially in warm-dry environments. Two hypotheses that may explain the abundance of tetraploids on the landscape include selection for drought resistance at the seedling stage, and greater competitive ability in water uptake in the upper soil horizon.

FieldValue
Modified
2022-05-24
Release Date
2022-05-24
Publisher
Identifier
ab3f38b2-15c7-4a44-9c84-7487d686d891
Spatial / Geographical Coverage Location
Great Basin USA
Language
English (United States)
License
notspecified
Author
Bryce Richardson, Matthew Germino, Marcus Warwell and Sven Buerki
Contact Name
Bryce Richardson
Contact Email
Public Access Level
Public
Data available on:: 
Monday, August 10, 2020